ANALYTICAL
28 A
CHEMISTRY
Better Equipment for your Laboratory zz^ae&sgKK
HAAK GLASSBLOWING BURNERS • ECONOMICAL · SILENT · WIDE FLAME RANGE · FOOT PEDAL OPERATION AVAILABLE Haak Model Ε The Haak Model Ε glassblowing burner has been designed by a glassblower to meet the requirements of both professional and amateur glassblowers equally well. The professional glassblower will be interested in the wide range of flames which this burner produces, from a fine needle point flame to a large, bushy annealing flame. The tempera tures produced will permit handling of "Vycor" brand glass and quartz tubing to 35 mm diameter without the use of hy drogen. For extra fine work an interchangeable tip may be used, but for tubing from 3 mm to 100 mm no tip changing is necessary. The amateur glassblower will be especially pleased with the foot pedal operation possible with this burner. This leaves both hands free to maintain complete control over the plastic glass. This has proved to be a great help to the professional glassblower as well, for it speeds up his production. The ease with which the various flames can be produced is also a great help to the beginner. Commercial glassblowing concerns are interested in the economy feature of the burner, for it uses oxygen at a maxi mum pressure of 5 lbs. In general, gas pressures must be re duced, rather than boosted by pumps as is necessary with other types of burners. The Haak Model Ε burner operates at a pressure of 6 inches of water. Silent operation is a great asset to all glassblowers. This burner is silent over most of its range. The burner is of brass construction, and is actually two concentric burners. I t is operated by two specially designed brass valves. The valves are mounted directly on the gas and oxygen mains, and may be operated by hand or foot. (For foot operation, the 51-20 foot pedal kit is necessary to mount the valves.) The burner may be tilted to any angle, and the broad cast aluminum base permits side motion without danger of tipping the burner.
A E - 5 1 - 1 9 GLASSBLOWING BURNERS—Complete with valves
Each
$ 7 7 . 5 0
A E - 5 1 - 1 9 - B BURNERS ONLY—On base, without valves
Each
4 1 . 5 0
A E - 5 1 - 1 9 C VALVES ONLY—May be used for eithergas or oxygen (to req'd.).Each
18.00
A E - 5 1 - 2 0 FOOT PEDAL KITS—All the parts necessary for mounting under a 38-inch (minimum) table to adapt the valves for foot pedal operation. The only tool needed for assembly is a screw driver Per Set
Ο IL ^ k O Aw··**/
A E - 5 1 - 2 1 - A FINE TIPS—Used for tubing and rod under 3 mm diameter
Each
2.50
Reserve your copy of new LePine Catalog of Apparatus and Chemi cals now in preparation—please use your company letterhead. CHEMICALS
ARTHUR S. LaPINE AND COMPANY,
LAPINE
LABORATORY
6001 S. KNOX AVE., CHICAGO 29, ILL.
SUPPLIES-EQUIPMENT
